Welding band for pipe joints



J ly 1945- E. c. PLANETT 2,380,071

WELDING BAND FOR PIPE JOINTS Filed April s, 1945 14m. CflA/v rz INVENTOR.

ATTORN EY.

Patented July 10, 1945 UNITED STATES PATENT OFFICE WELDING BAND FOR PIPE JOINTS Earl C. Planett, Downey, Calif. Application April 3, 1943, Serial No. 481,757

' 1 Claim. (01. 285-111) This invention relates to welding bands for use in butt-welding pipe sections together.

It is the principal object of my present invention to provide an improved welding band for pipe which will materially reduce the amount of welding rod used; reduce the amount of welding time necessary to effect a proper butt weld between pipe sections and which will insure that no slag or molten metal will enter the interior of the pipe at the welded joint during welding.

In practicing my invention, I provide a circular flat spring band of a diameter that it may telescope into the ends of adjoining pipe sections and align the same. Mounted ciroumferentially and centrally upon this band is a ring formed of metal having a, melting point approximately of the same as welding rod. The pipe ends tight-1y abut against this ring when telescoped over the band. The operator then applies heat to puddle the ring and adds suflicient rod to form a proper weld the full depth of the pipe wall. The band resists burning through during the welding, and thus prevents slag from entering the pipe.

One form which my invention may assume is exemplified in the following description, and illustrated by Way of example in the accompanying drawing, in which:

Fig. 1 is a perspective view partly in elevation and partly in section showing my improved welding band and the manner of its application and use.

Fig. 2 is an end view of the welding band. Fig. 3 is a cross-sectional view of the band showing the manner in which it is applied to of each other so as to form a gap In. Ordinarily the band I2 is of an external diameter slightly larger than the interior diameterof the pipe to which it is to be fitted so that it is slightly under compression when telescoped into the pipe. This The band adapted to receive a spacer ring l5. This ring M5 is round in cross-section and of a diameter equal to the space it is desired to maintain bethat of welding rod. The ends of the ring I5 also enables the inherent spring qualities of the band j tocause it to tightly grip the pipe so that it will not easily become dislodged. Even when fitted to the pipe, however, ,the gap 12a. is not entirely closed so that the band may expand when heated without buckling.

Formed circumferentially and centrally of the band is a slight groove or scoring M which is extend short of each other so that a gap l6 occurs between its ends as illustrated in Fig. 2. The gaps l2a and iii are relatively circumferentially offset as illustrated so that no gap extends entirely through the band to enable slag to penetrate into the interior of the pipe during welding.

I prefer that the ring I5 be spot-welded to the band 12, but this is not entirely necessary as one can rely, if one so desires, upon the nesting of the ring i5 on the circumferential scoring I4 in the band l2 for this-purpose.

In use of the device, it is slightly compressed and inserted into the end of one pipe section, until the ring l5 abuts against the end of this section. Then the other pipe section is drawn over the projecting portion of the band l5 until its end also abuts against the ring t5. Obviously, the ring [5 in such case acts as a spacing element to provide the proper spacing between the contiguous pipe ends for welding purposes.

It is obvious that the band I2 forms a convenient member for properly aligning the abutting ends of the pipe and maintaining them in aligned condition for welding. welder puddles the ring l5 and adds sufiicient rod so that a proper weld is efiected between the pipe ends for the full thickness of the pipe wall. In that the ring [5 is approximately the same analysis of the welding rod a good weld will be eiiected with the use of a minimum of welding rod and with a, minimum of Welding time expended.

Due to the fact that the band l2 will readily transmit heat and radiate the same it will not burn through, and consequently will prevent penetration of slag into the pipe at the joint. It is also seen that inasmuch as the gap IIS and Ma of the ring l5 and .band H are relatively offset, expansion is provided for without leaving any opening in alignment with the space between the pipe ends through which slag or molten metal may penetrate into the pipe at the joint.

From the foregoing it is obvious that Lhave provided a very simple welding band which may be used in aligning and properly spacing the ends of pipe sections for welding and which, because it provides a filler in the seam, minimizes the While so aligned, the

ing a groove formed in its exterior surface and extending circumferentially about the same and centrally thereof, a. ring of fusible metal and of circular cross-section and of a diameter considerably less than the width of the band and mounted circumferentiaily and centrally of the band and nesting in said groove, the ends of said band being spaced apart, the ends of said ring being spaced apart, the spacing between the band ends and ring ends being spaced apart circum- Ierentially.

EARL C. PLANE'I'I. 

